Legs pain from many years. And solution.

Hi my mother is facing severe calf muscle and heel  pain  for past 20 years ( it's similar to pain someone would feel after doing labour work). Pain increases during nights. It seams like hereditary because even my grand father and myself (not frequent) are having same issue. She would feel releaved after having oil massage for legs but sometimes need to do for an hour with more pressure. Other think we have observed is when ever she takes food with more masala,non veg and other similar items , pain definitely increases. Some doctor's said that reason can be the removal of uterus at early age (22), but no one has given solution for the issue. Please help me on finding the right doctor and solution.